2022-10-23 14:30:04 +01:00
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---
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title: Ohm's Law
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categories:
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- Electronics
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2023-02-10 18:22:04 +00:00
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tags: [physics, electricity]
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2022-10-23 14:30:04 +01:00
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---
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# Ohm's Law
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2024-02-02 15:58:13 +00:00
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The relationship between
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[current](/Electronics_and_Hardware/Analogue_circuits/Current.md),
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[voltage](/Electronics_and_Hardware/Analogue_circuits/Voltage.md), and
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[resistance](/Electronics_and_Hardware/Analogue_circuits/Resistance.md) is
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defined by Ohm's Law:
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2022-10-23 14:30:04 +01:00
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2024-02-02 15:58:13 +00:00
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> The current flowing from one point to another is equal to the voltage accross
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> these points divided by the resistance between them.
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2022-10-23 14:30:04 +01:00
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$$
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I = \frac{V}{R}
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$$
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2024-02-02 15:58:13 +00:00
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As an application, consider a circuit with a 9V battery with a 10,000 $\Omega$
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resistor attached across its terminals.
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2022-10-23 14:30:04 +01:00
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The current flowing through the resistor can be calculated as follows:
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$$
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\frac{9V} {10,000\Omega} = 0.0009 \textsf{A} (0.9 \textsf{mA})
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$$
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